JPS6396098U - - Google Patents

Info

Publication number
JPS6396098U
JPS6396098U JP19160186U JP19160186U JPS6396098U JP S6396098 U JPS6396098 U JP S6396098U JP 19160186 U JP19160186 U JP 19160186U JP 19160186 U JP19160186 U JP 19160186U JP S6396098 U JPS6396098 U JP S6396098U
Authority
JP
Japan
Prior art keywords
leveling
boom
tank
cylinder side
work vehicle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP19160186U
Other languages
Japanese (ja)
Other versions
JPH0518400Y2 (en
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1986191601U priority Critical patent/JPH0518400Y2/ja
Publication of JPS6396098U publication Critical patent/JPS6396098U/ja
Application granted granted Critical
Publication of JPH0518400Y2 publication Critical patent/JPH0518400Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Forklifts And Lifting Vehicles (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図、第２図は、本考案に係る高所作業車の
説明図、第３図は、本考案に係る高所作業車のレ
ベリング機構を示す回路図、第４図は、本考案の
作業台取付部の説明図、第５図は、従来の高所作
業車の説明図である。 ２；基台、３；ブーム、５；上側レベリングシ
リンダ、８；下側レベリングシリンダ、９；作業
台取付部、１３；作業台、２０，２１；連通路、
２８，２９；開閉弁、２４；四方向三位置油圧切
換弁、Ｂ；高所作業車。 Figures 1 and 2 are explanatory diagrams of the vehicle for aerial work according to the present invention, Figure 3 is a circuit diagram showing the leveling mechanism of the vehicle for aerial work according to the present invention, and Figure 4 is a diagram showing the leveling mechanism of the vehicle for aerial work according to the present invention. FIG. 5, which is an explanatory diagram of the workbench attachment part, is an explanatory diagram of a conventional aerial work vehicle. 2; Base, 3; Boom, 5; Upper leveling cylinder, 8; Lower leveling cylinder, 9; Workbench mounting portion, 13; Workbench, 20, 21; Communication path,
28, 29; on-off valve; 24; four-way three-position hydraulic switching valve; B; aerial work vehicle.

Claims (1)

【実用新案登録請求の範囲】 (1) 基台に対し起伏駆動自在に取り付けられた
ブーム、ブームの先端に当該ブームの起伏方向と
同一面内で回動可能に枢着された作業台取付部、
および作業台取付部に取り付けられた作業台を備
えた高所作業車のレベリング機構、特に、前記基
台と前記ブームの適所間に下側レベリングシリン
ダを前記作業台取付部と前記ブームの適所間に上
側レベリングシリンダを夫々配設すると共に、上
下のレベリングシリンダの各ロツド側油室および
各反ロツド側油室を夫々連通路で接続したものに
おいて、前記各連通路を、開閉弁２８，２９を介
してタンク油路に接続可能に構成すると共に、四
方向三位置油圧切換弁を介して高圧油路およびタ
ンク油路に接続可能に構成したことを特徴とする
高所作業車のレベリング機構。 (2) 前記各連通路の夫々には、下側レベリング
シリンダ側から上側レベリングシリンダ側への作
動油の流れを常時許容する如きパイロツトチエツ
ク弁が介装されており、これら各パイロツトチエ
ツク弁は他方のパイロツトチエツク弁が介装され
ている連通路における下側レベリングシリンダ側
の油圧をパイロツト圧として開放する如く構成し
ており、前記開閉弁２８，２９は各連通路におけ
るパイロツトチエツク弁が介装されている連通路
の下側シリンダ側をタンク油路に接続可能に構成
していることを特徴とする高所作業車のレベリン
グ機構。[Scope of Claim for Utility Model Registration] (1) A boom attached to a base so that it can be driven up and down, and a work platform mounting part that is pivotally attached to the tip of the boom so that it can rotate in the same plane as the up and down direction of the boom. ,
and a leveling mechanism of an aerial work vehicle having a work platform attached to a work platform mounting part, in particular, a lower leveling cylinder is installed between the base and a suitable position of the boom; An upper leveling cylinder is disposed in each of the upper and lower leveling cylinders, and the rod-side oil chambers and the anti-rod side oil chambers of the upper and lower leveling cylinders are connected by communication passages, respectively. 1. A leveling mechanism for an aerial work vehicle, characterized in that the leveling mechanism is configured to be connectable to a tank oil path through a four-way three-position hydraulic switching valve, and connectable to a high-pressure oil path and a tank oil path through a four-way three-position hydraulic switching valve. (2) Each of the communication passages is provided with a pilot check valve that always allows the flow of hydraulic oil from the lower leveling cylinder side to the upper leveling cylinder side, and each of these pilot check valves is connected to the other side. The opening/closing valves 28 and 29 are constructed so that the hydraulic pressure on the lower leveling cylinder side in the communication passage in which a pilot check valve is interposed is released as pilot pressure. A leveling mechanism for an aerial work vehicle, characterized in that a lower cylinder side of a communication passage connected to the tank can be connected to a tank oil passage.
JP1986191601U 1986-12-11 1986-12-11 Expired - Lifetime JPH0518400Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1986191601U JPH0518400Y2 (en) 1986-12-11 1986-12-11

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1986191601U JPH0518400Y2 (en) 1986-12-11 1986-12-11

Publications (2)

Publication Number Publication Date
JPS6396098U true JPS6396098U (en) 1988-06-21
JPH0518400Y2 JPH0518400Y2 (en) 1993-05-17

Family

ID=31145891

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1986191601U Expired - Lifetime JPH0518400Y2 (en) 1986-12-11 1986-12-11

Country Status (1)

Country Link
JP (1) JPH0518400Y2 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56136800A (en) * 1980-03-29 1981-10-26 Shin Meiwa Ind Co Ltd Housing device for bench in height service car
JPS5975000U (en) * 1982-11-11 1984-05-21 日本軽金属株式会社 Bridge inspection vehicle
JPS6165147U (en) * 1984-10-01 1986-05-02

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56136800A (en) * 1980-03-29 1981-10-26 Shin Meiwa Ind Co Ltd Housing device for bench in height service car
JPS5975000U (en) * 1982-11-11 1984-05-21 日本軽金属株式会社 Bridge inspection vehicle
JPS6165147U (en) * 1984-10-01 1986-05-02

Also Published As

Publication number Publication date
JPH0518400Y2 (en) 1993-05-17

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